Even if the APA is an older or newer version, you can usually restore it. It would generate an error only when you try to open something that is newer than the version of FT View installed on your machine. And since it is working on a coworker's PC we can possibly rule out a corruption.
I'm wondering if the issue is that maybe it is a FT View SE application and your computer only has ME, but your coworker has SE and ME. I just tried an SE file on a computer with only ME and that is the message I received.
Newer version of SE use a different file format, but older versions of SE and ME both used the APA format.
OG